期刊
OPTICS LETTERS
卷 40, 期 17, 页码 3998-4001出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.40.003998
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资金
- Belgian F.R.S.-FNRS
- European Research Council [280161]
- Actions de la Recherche concertees programme (Prediction Project)
- [IAP7/35]
- European Research Council (ERC) [280161] Funding Source: European Research Council (ERC)
We report the first excitation of surface plasmon waves at near-infrared telecommunication wavelengths using polymer optical fibers (POFs) made of poly(methyl methacrylate) (PMMA). For this, weakly tilted fiber-Bragg gratings (TFBGs) have been photo-inscribed in the core of step-index POFs and the fiber coated with a thin gold layer. Surface plasmon resonance is excited with radially polarized modes and is spectrally observed as a singular extinction of some cladding-mode resonances in the transmitted amplitude spectrum of gold-coated TFBGs. The refractometric sensitivity can reach similar to 550 nm/RIU (refractive index unit) with a figure of merit of more than 2000 and intrinsic temperature self-compensation. This kind of sensor is particularly relevant to in situ operation. (C) 2015 Optical Society of America
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